Ballpoint pen



FIG. 1 is a perspective view of front, top plan and left side of a ballpoint pen showing our new design;

FIG. 2 is a front view, a rear view being a mirror image thereof;

FIG. 3 is a left side view thereof;

FIG. 4 is a right side view thereof;

FIG. 5 is a top plan view thereof;

FIG. 6 is a bottom view thereof;

FIG. 7 is a perspective view of front, top plan and left side of the ballpoint pen in an uncapped state; and,

FIG. 8 is a perspective view of rear, top plan and right side of the ballpoint pen in an uncapped state.

The portions of the article in broken lines are shown for illustrative purposes only and form no part of the claimed design. 

The ornamental design for a ballpoint pen, as shown and described. 